Glaciers are massive, slow-moving bodies of ice that form from accumulated snow over many years. They are found in polar regions and high mountains, where temperatures are low enough to prevent the snow from melting completely. Glaciers play a crucial role in shaping landscapes through erosion and sediment transport. As they move, glaciers carve out valleys and create unique geological features. They also serve as important indicators of climate change, as their retreat can signal rising global temperatures. Protecting glaciers is vital for maintaining ecosystems and freshwater resources for millions of people worldwide.